Fix bug that was causing compilation errors for tables from file system

see #15

pom.xml

@@ -6,7 +6,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.liblouis</groupId>
   <artifactId>liblouis-java</artifactId>
-  <version>4.1.0</version>
+  <version>4.1.1-SNAPSHOT</version>
   <packaging>bundle</packaging>
   <name>liblouis-java</name>
   <description>JNA based Java bindings to liblouis, an open-source braille translator and back-translator.</description>

src/main/java/org/liblouis/Louis.java

@@ -290,10 +290,12 @@ public URL resolve(String table, URL base) {
 						}
 						// try file system
 						if (base != null && base.toString().startsWith("file:")) {
-							File f = new File(asFile(base), table);
+							File f = base.toString().endsWith("/")
+								? new File(asFile(base), table)
+								: new File(asFile(base).getParentFile(), table);
 							if (f.exists())
 								return asURL(f);
-						} else {
+						} else if (base == null) {
 							File f = new File(table);
 							if (f.exists())
 								return asURL(f);
@@ -414,7 +416,7 @@ public Object fromNative(Object file, FromNativeContext context) {
 		}
 	}
 
-	private static File asFile(URL url) throws IllegalArgumentException {
+	static File asFile(URL url) throws IllegalArgumentException {
 		try {
 			if (!"file".equals(url.getProtocol()))
 				throw new RuntimeException("expected file URL");

src/test/java/org/liblouis/FindTranslatorTest.java

@@ -10,6 +10,7 @@
 import org.junit.Test;
 import static org.junit.Assert.assertEquals;
 
+import static org.liblouis.Louis.asFile;
 import static org.liblouis.Louis.asURL;
 
 public class FindTranslatorTest {
@@ -49,9 +50,17 @@ public FindTranslatorTest() {
 				public URL resolve(String table, URL base) {
 					if (table == null)
 						return null;
-					File tableFile = new File(table);
-					if (tableFile.exists())
-						return asURL(tableFile);
+					if (base != null && base.toString().startsWith("file:")) {
+						File f = base.toString().endsWith("/")
+							? new File(asFile(base), table)
+							: new File(asFile(base).getParentFile(), table);
+						if (f.exists())
+							return asURL(f);
+					} else if (base == null) {
+						File f = new File(table);
+						if (f.exists())
+							return asURL(f);
+					}
 					return null;
 				}
 				public Set<String> list() {

src/test/java/org/liblouis/TableFromFileSystemTest.java

@@ -0,0 +1,24 @@
+package org.liblouis;
+
+import java.io.File;
+
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+
+public class TableFromFileSystemTest {
+
+	@Test
+	public void testTableFromFileSystemAbsolutePath() throws Exception {
+		Translator translator = new Translator(new File(tablesDir, "foobar.tbl").getAbsolutePath());
+		assertEquals(
+			"foobar",
+			translator.translate("foobar", null, null, null).getBraille());
+	}
+
+	private final File tablesDir;
+
+	public TableFromFileSystemTest() {
+		File testRootDir = new File(this.getClass().getResource("/").getPath());
+		tablesDir = new File(testRootDir, "tables");
+	}
+}

src/test/resources/tables/foobar.cti

@@ -1,5 +1,3 @@
-#+locale: foo
-
 uplow Aa 18,1
 uplow Bb 128,12
 uplow Cc 148,14

src/test/resources/tables/foobar.tbl

@@ -0,0 +1,3 @@
+#+locale: foo
+
+include foobar.cti